浅谈三微改在T梁预制标准化施工中的应用

在现代社会条件下提高桥梁工程的施工质量意识,专业化施工、精细化管理是现在施工的趋势,因此要求施工企业必须提升施工技术水平,同时,不断更新施工设备、微改创新来辅助现代工程施工的完成,从而全面提升公路桥梁施工技术质量。结合自身十几年的工作经验,浅谈下三微改在T梁预制标准化施工中的应用。

海洋环境下高墩轻型液压爬模施工技术的应用

文章基于沙埕湾跨海大桥南引桥高墩身施工背景,结合项目海洋环境潮间带的特点,对轻型液压爬模施工进行分析和总结,为今后类似工程提供借鉴。

Microstructure and frictional properties of 3D needled C/SiC brake materials modified with graphite

The 3D needled C/SiC brake materials modified with graphite were prepared by a combined process of the chemical vapor infiltration,slurry infiltration and liquid silicon infiltration process.The microstructure and frictional properties of the brake materials were investigated.The density and open porosity of the materials as-received were about(2.1±0.1)g/cm3and(5±1)%,respectively.The brake materials were composed of 59%C,39%SiC,and 2%Si(mass fraction).The content of Si in the C/SiC brake materials modified with graphite was far less than that in the C/SiC brake materials without being modified with graphite,and the Si was dispersed.The braking curve of the 3D needled C/SiC modified with graphite was smooth,which can ensure the smooth and comfortable braking.The frictional properties under wet condition of the 3D needled C/SiC modified with graphite showed no fading.And the linear wear rate of the C/SiC modified with graphite was lower than that of the C/SiC unmodified.

提高T梁预制工后钢筋间距、保护层厚度合格率的技术研究

钢筋作为混凝土构件的骨架,钢筋间距、钢筋保护层控制相当重要,它涉及到结构安全性,规范要求的合格率要在90%以上。但是钢筋混凝土中钢筋间距、钢筋保护层偏差是一个容易犯错、仅容易忽视的质量通病,尤其是在工后检测即使不合格,通常也由于无法整改(整改只能进行报废处理)而不了了之,若不能解决这个问题,"内实"只是空谈;因此要加强过程控制,杜绝事后整改,从而落实公路梁板预制标准化再提升。依托沙埕湾跨海公路通道项目标准化T梁预制场,浅谈提高预制T梁工后钢筋间距、保护层合格率的技术研究。